• Journal of Chest Surgery
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• 제52권5호
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• pp.372-375
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• 2019

A 55-year-old man was admitted to the trauma center after a car accident. Cardiac tamponade, traumatic aortic injury, and hemoperitoneum were diagnosed by ultrasonography. The trauma surgeon, cardiac surgeon, and interventional radiologist discussed the prioritization of interventions. Multi-detector computed tomography was carried out first to determine the severity and extent of the injuries, followed by exploratory sternotomy to repair a left auricle rupture. A damage control laparotomy was then performed to control mesenteric bleeding. Lastly, a descending thoracic aorta injury was treated by endovascular stenting. These procedures were performed in the hybrid-angio room. The patient was discharged on postoperative day 135, without complications.

• Clinical Pain
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• 제20권1호
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• pp.7-14
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• 2021

Musculoskeletal ultrasound has evolved as the essential tool to diagnose and guide intervention procedures in people with neuromusculoskeletal conditions. Image optimization and understanding device operations are core components for ultrasound guided intervention procedure training. All ultrasound machines share the common operative features and there are various buttons for the features in the device control panel. Ultrasound "knobology" refers to the thorough understanding of imaging optimization. This review addressed basic information for the transducers, depth setting, gain and focus control, different modes focusing on brightness and doppler modes.

• 대한영상의학회지
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• 제81권2호
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• pp.290-301
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• 2020

최근 들어 승모판(mitral valve) 질환에 대해 승모판 성형술(mitral valvuloplasty) 또는 중재 시술을 통하여 인공판막을 넣어주는 시술(transcatheter mitral valve replacement)이 발전하고 있다. 이러한 치료 계획을 위해서는 승모판의 해부학적인 정보를 수술자 혹은 시술자의 관점에서 조금 더 자세하게 알려줄 필요가 있다. 본 리뷰에서는 승모판의 보존 수술 및 중재적 시술의 치료 전 계획을 위한 승모판의 해부학 및 CT를 이용한 승모판막 주변의 평가 방법에 대해 다루고자 한다.

• Korean Journal of Radiology
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• 제22권1호
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• pp.72-85
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• 2021

Transfemoral access (TFA) is a widely used first-line approach for most peripheral vascular interventions. Since its introduction in cardiologic and neurointerventional procedures, several advantages of transradial access (TRA) over TFA have been demonstrated, such as patient preference, lower complication rates, early ambulation, and shorter hospital stay. However, studies reporting the safety and efficacy of this approach for peripheral vascular interventions performed by interventional radiologists are relatively few. This review aimed to summarize the technique and clinical applications of TRA in percutaneous transcatheter visceral artery embolization and the management of complications.

• 대한의용생체공학회:의공학회지
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• 제41권5호
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• pp.173-178
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• 2020

Remote control intervention surgery robotic system improves treatment effect on cardiovascular patients and reduces X-ray exposure. However, at the time of the first procedure, CT (computerized tomography) and other ultrasound diagnostic equipment should be used because the operator must insert the cannula directly into the patient's leg. Improvements to this have been un-met-needs of hospitals. In this paper, we developed a system that can insert the cannula intuitively and quickly by displaying blood vessels at a glance through the system using smart wearable glasses. The core development method is as follows. In order to project augmented reality onto the surgical image, CT scan angiography image is extracted and processed. In the process, three CT-Markers are used to create a coordinate system of blood vessel images. Additionally, a reference marker is photographed on a single camera to obtain a camera coordinate system. Since the CT marker and the reference marker are in the same position, 3D registration is performed. In the text, a detailed explanation will be given.

• 대한영상의학회지
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• 제82권3호
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• pp.527-540
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• 2021

대퇴슬와동맥의 말초동맥폐쇄질환은 일반적으로 죽상경화증에 의해 발생하며, 질병의 정도에 따라 간헐적 파행에서부터 심각한 사지 허혈 또는 조직 손상에 이르는 다양한 증상으로 나타날 수 있다. 따라서, 증상을 개선하고 사지를 형태적, 기능적으로 보존하기 위해서는 적절한 치료가 필요하다. 대퇴슬와동맥 질환에서 시행되는 대표적인 인터벤션 치료로는 혈관 성형술, 스텐트 삽입술, 죽종절제술 등이 있다. 수년에 걸쳐, 혈관 내 재개통술은 최소 침습적이라는 이점과 더불어 시술 방법 및 사용 기기의 지속적인 발전을 토대로 말초동맥폐쇄질환의 치료에 널리 시행되고 있다. 이번 종설에서는 대퇴슬와동맥 질환의 다양한 혈관 내 치료 방법에 대해 소개하고, 문헌 고찰을 통해 현재까지 나온 임상 연구의 결과들을 논의하며, 대퇴슬와동맥질환의 치료에 적용되는 시술 방법에 대한 영상을 제시하여 독자의 이해를 돕고자 한다.

• Korean Journal of Radiology
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• 제1권3호
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• pp.121-126
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• 2000

Objective: To evaluate the therapeutic efficacy of a new liquid embolic material, Embol, in embolization of the renal artery. Materials and Methods: Embol is a new embolic material obtained by partial hydrolysis of polyvinyl acetate mixed in absolute ethanol and Iopromide 370 and manufactured by Schering Korea, Kyonggido, Korea. Six patients who underwent embolization of the renal artery using Embol were evaluated. Four were male and two were female and their ages ranged from 11 to 70 (mean, 53) years. Clinical and radiologic diagnoses referred for renal artery embolization were renal cell carcinoma (n = 3), renal angiomyolipoma (n = 2) and pseudoaneurysm of the renal artery (n = 1). After selective renal angiography, Embol was injected through various catheters, either with or without a balloon occlusion catheter. Changes in symptoms and blood chemistry which may have been related to renal artery embolization with Embol were analyzed. Results: The six patients showed immediate total occlusion of their renal vascular lesions. One of the three in whom renal cell carcinoma was embolized with Embol underwent radical nephrectomy, and the specimen thus obtained revealed 40% tumor necrosis. In the two patients with angiomyolipomas, the tumors decreased in size and abdominal pain subsided. Bleeding from pseudoaneurysm of the renal artery was successfully controlled. Four patients showed symptoms of post-embolization syndrome, and one of these also showed increased levels of blood urea nitrogen and creatinine. One patient experienced transient hypertension. Conclusion: Embol is easy to use, its radiopacity is adequate and it is a safe and effective embolic material which provides immediate and total occlusion of renal vascular lesions.

• Clinics in Shoulder and Elbow
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• 제24권2호
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• pp.55-65
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• 2021

Background: Although ultrasound-guided needle decompression (US-GND) can treat calcific tendinitis of the shoulder effectively, repeat procedures might be required for unresolved symptoms. We evaluated the overall clinical outcomes of US-GND with subacromial steroid injection and the final results and factors predisposing toward repeat procedures. Methods: Ninety-eight patients who underwent US-GND for calcific tendinitis of the supraspinatus/infraspinatus were analyzed between March 2017 and December 2018. The clinical outcomes (pain visual analog scale, functional visual analog scale [FVAS], and American Shoulder and Elbow Surgeons [ASES] score) and final subjective satisfaction were compared between groups A (single US-GND) and B (repeat US-GND). The factors predisposing toward repeated US-GNDs were analyzed. Results: We found that 59.3% (58/98) of patient ASES scores were ≥80, and 73.5% of patients (72/98) were satisfied with the outcome. Group B (n=14) demonstrated a significantly higher rate of dominant-arm involvement compared to group A (78.6% vs. 48.8%, p=0.046). However, initial calcification size, shape, number, density, subscapularis involvement, lavage, and procedure time did not differ significantly between the groups. Group B showed poorer final FVAS (7 [interquartile range, 6-8] vs. 8 [interquartile range, 7-9], p=0.036) and subjective satisfaction compared to group A (satisfied: 5 [35.7%] vs. 67 [79.8%], p<0.001]. Conclusions: US-GND with subacromial steroid injection is a viable treatment option for calcific tendinitis of the shoulder. Dominant-arm involvement was the only independent factor for repeated US-GND. Final outcome of repeated US-GND for unimproved patients was promising; however, these outcomes were poor compared to those of the patients who improved after the first procedure.

• Journal of Chest Surgery
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• 제39권12호
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• pp.934-938
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• 2006

대동맥 박리증에 의한 관류부전은 진단상의 어려움을 야기할 뿐만 아니라 술 후 환자사망의 주요 원인으로 작용한다. 이러한 관류부전은 여러 가지 기전에 의해 나타나며, 이에 따른 적절한 치료방법의 선택이 환자예후에 중요한 영향을 미친다. 사지 관류부전의 경우 통상적으로 혈관 우회술이 주로 사용되어졌으나, 비침습적인 중재술이 하나의 좋은 치료방법으로 대두되고 있다. 저자들은 급성 대동맥 박리증에 의한 하지 관류부전 환자에서 대동맥치환술에 이은 스텐트 삽입술로 좋은 결과를 얻었기에 문헌과 함께 보고한다.

• Clinics in Shoulder and Elbow
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• 제20권2호
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• pp.84-89
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• 2017

Background: Common and effective treatments for calcific tendinitis involve needling procedures. However, it has been widespread practice to refer patients with calcific tendinitis, which is a predominantly orthopedic condition, to radiology department. The purpose of this study was to compare clinical and radiological outcomes after ultrasound-guided needling for calcific tendinitis between the orthopedics and radiology department. Methods: Seventy-seven shoulders (Group 1) and 38 shoulders (Group 2) treated in the radiology and orthopedic department, respectively. A fellowship-trained orthopedic surgeon and a musculoskeletal radiologist each performed the procedure of ultrasound-guided needle decompression with subacromial steroid injection. Clinical outcomes was evaluated using the visual analogue scale for pain (pVAS) and the American Shoulder and Elbow Surgeons (ASES) shoulder score before treatment and at each follow-up. The pre- and postneedling size and shape of the calcific deposits were compared between the two groups. Results: We analyzed a total of 56 shoulders for Group 1 and 32 shoulders for Group 2. The mean age and sex ratio of the patients no significantly different. We found that the mean decrease in the diameter of calcification between pre- and post-needling was 9.0 mm for Group 1 and 13.1 mm for Group 2; the difference was significantly larger in Group 2 than in Group 1. Both groups showed improved pVAS and ASES scores after needling but the extent of these improvements did not differ with the type of operator. Conclusions: Needling decompression performed by orthopedic surgeons could a viable option for the treatment of calcific tendinitis.